docs: def clean(self):
  
          """Clear the data. For each ``YTStor`` object present in this object ``clean`` method is executed."""
  
          for s in self.visible_files.values():
              s.clean()
          for s in [sub[1][x] for sub in self.avail_files.values() for x in sub[1]]: # Double list comprehensions aren't very
              s.clean()